/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.code.motoo.codec.serialization;

import com.google.code.motoo.codec.CumulativeProtocolDecoder;
import com.google.code.motoo.codec.ProtocolDecoderOutput;
import com.google.code.motoo.core.IoBuffer;
import com.google.code.motoo.core.IoSession;

/**
 * 
 * @author linfengqi
 * @version 1.0  May 8, 2009
 */
public class SerializationDecoder extends CumulativeProtocolDecoder {

	public boolean doDecode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws Exception {
		if (in.hasRemaining() && in.prefixedDataAvailable(4)) {
			int dataLength = in.getInt();
			IoBuffer buffer = IoBuffer.allocate(dataLength);
			buffer.put(in, dataLength);
			buffer.flip();
			Object message = SerializationUtils.decodeFromByteArray(buffer.array());
			out.write(message);
			return true;
		}
		return false;
	}

	public void dispose(IoSession session) throws Exception {
		
	}

	public void finishDecode(IoSession session, ProtocolDecoderOutput out) throws Exception {
		
	}

}
